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(2n×1) Reconstructions of TiO2(011) Revealed by Noncontact Atomic Force Microscopy and Scanning Tunneling Microscopy

Pang, CL; Yurtsever, A; Onoda, J; Sugimoto, Y; Thornton, G; (2014) (2n×1) Reconstructions of TiO2(011) Revealed by Noncontact Atomic Force Microscopy and Scanning Tunneling Microscopy. The Journal of Physical Chemistry Part C: Nanomaterials and Interfaces , 118 (40) 23168-23174. 10.1021/jp507422s. Green open access

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Abstract

We have used noncontact atomic force microscopy (NC-AFM) and scanning tunneling microscopy (STM) to study the rutile TiO2(011) surface. A series of (2n×1) reconstructions were observed, including two types of (4×1) reconstruction. High resolution NC-AFM and STM images indicate that the (4×1)-α phase has the same structural elements as the more widely reported (2×1) reconstruction. An array of analogous higher order (2n×1) reconstructions were also observed where n = 3-5. On the other hand, the (4×1)-β reconstruction seems to be a unique structure without higher order analogues. A model is proposed for this structure that is also based on the (2×1) reconstruction but with additional microfacets of {111} character.

Type: Article
Title: (2n×1) Reconstructions of TiO2(011) Revealed by Noncontact Atomic Force Microscopy and Scanning Tunneling Microscopy
Open access status: An open access version is available from UCL Discovery
DOI: 10.1021/jp507422s
Publisher version: http://dx.doi.org/10.1021/jp507422s
Language: English
Additional information: ACS AuthorChoice - Terms of Use
Keywords: noncontact atomic force microscopy, scanning tunneling microscopy, rutile TiO2(011), surface reconstruction, hydroxyl, defects
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
URI: https://discovery.ucl.ac.uk/id/eprint/1447563
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